java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 23:43:56,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 23:43:56,873 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 23:43:56,888 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 23:43:56,888 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 23:43:56,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 23:43:56,891 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 23:43:56,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 23:43:56,896 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 23:43:56,897 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 23:43:56,900 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 23:43:56,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 23:43:56,903 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 23:43:56,905 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 23:43:56,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 23:43:56,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 23:43:56,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 23:43:56,917 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 23:43:56,919 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 23:43:56,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 23:43:56,922 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 23:43:56,923 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 23:43:56,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 23:43:56,926 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 23:43:56,926 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 23:43:56,927 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 23:43:56,928 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 23:43:56,929 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 23:43:56,930 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 23:43:56,931 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 23:43:56,931 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 23:43:56,932 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 23:43:56,932 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 23:43:56,933 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 23:43:56,934 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 23:43:56,934 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 23:43:56,935 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-11 23:43:56,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 23:43:56,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 23:43:56,957 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 23:43:56,957 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 23:43:56,957 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 23:43:56,957 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 23:43:56,958 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 23:43:56,958 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 23:43:56,958 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 23:43:56,958 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 23:43:56,958 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 23:43:56,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 23:43:56,960 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 23:43:56,960 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 23:43:56,960 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 23:43:56,961 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 23:43:56,961 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 23:43:56,961 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 23:43:56,961 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 23:43:56,961 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 23:43:56,962 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 23:43:56,963 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 23:43:56,963 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 23:43:56,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 23:43:56,964 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 23:43:56,964 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 23:43:56,964 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 23:43:56,964 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 23:43:56,964 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 23:43:56,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 23:43:56,965 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 23:43:56,965 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 23:43:56,965 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 23:43:57,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 23:43:57,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 23:43:57,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 23:43:57,052 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 23:43:57,053 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 23:43:57,053 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp_true-unreach-call.i [2018-09-11 23:43:57,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d50304a/3b3c8da445084a719a227242cc4b913e/FLAG9dda09554 [2018-09-11 23:43:57,657 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 23:43:57,658 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp_true-unreach-call.i [2018-09-11 23:43:57,675 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d50304a/3b3c8da445084a719a227242cc4b913e/FLAG9dda09554 [2018-09-11 23:43:57,701 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d50304a/3b3c8da445084a719a227242cc4b913e [2018-09-11 23:43:57,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 23:43:57,717 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 23:43:57,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 23:43:57,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 23:43:57,727 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 23:43:57,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fa48ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57, skipping insertion in model container [2018-09-11 23:43:57,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,904 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 23:43:57,979 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 23:43:58,157 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 23:43:58,192 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 23:43:58,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58 WrapperNode [2018-09-11 23:43:58,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 23:43:58,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 23:43:58,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 23:43:58,299 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 23:43:58,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 23:43:58,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 23:43:58,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 23:43:58,374 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 23:43:58,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... [2018-09-11 23:43:58,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 23:43:58,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 23:43:58,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 23:43:58,538 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 23:43:58,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 23:43:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 23:43:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 23:43:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i__fabs [2018-09-11 23:43:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i__fabs [2018-09-11 23:43:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i____VERIFIER_assert [2018-09-11 23:43:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i____VERIFIER_assert [2018-09-11 23:43:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i__ludcmp [2018-09-11 23:43:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i__ludcmp [2018-09-11 23:43:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 23:43:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 23:43:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 23:43:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 23:44:11,020 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 23:44:11,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:44:11 BoogieIcfgContainer [2018-09-11 23:44:11,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 23:44:11,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 23:44:11,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 23:44:11,028 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 23:44:11,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:43:57" (1/3) ... [2018-09-11 23:44:11,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e0f7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:44:11, skipping insertion in model container [2018-09-11 23:44:11,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:58" (2/3) ... [2018-09-11 23:44:11,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e0f7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:44:11, skipping insertion in model container [2018-09-11 23:44:11,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:44:11" (3/3) ... [2018-09-11 23:44:11,032 INFO L112 eAbstractionObserver]: Analyzing ICFG lu.cmp_true-unreach-call.i [2018-09-11 23:44:11,045 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 23:44:11,055 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 23:44:11,111 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 23:44:11,112 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 23:44:11,112 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 23:44:11,113 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 23:44:11,113 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 23:44:11,113 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 23:44:11,114 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 23:44:11,114 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 23:44:11,114 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 23:44:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-09-11 23:44:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-11 23:44:11,151 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:44:11,154 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 23:44:11,156 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:44:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1031654914, now seen corresponding path program 1 times [2018-09-11 23:44:11,168 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:44:11,169 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-11 23:44:11,173 INFO L202 CegarAbsIntRunner]: [0], [1], [11], [14], [16], [175], [179], [184], [204], [218], [219], [220], [222] [2018-09-11 23:44:11,239 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-11 23:44:11,239 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 23:44:11,400 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 23:44:11,402 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-11 23:44:11,428 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 23:44:11,532 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 61.11% of their original sizes. [2018-09-11 23:44:11,533 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 23:44:11,583 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 23:44:11,585 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 23:44:11,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-11 23:44:11,585 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 23:44:11,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-11 23:44:11,596 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-11 23:44:11,597 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 23:44:11,599 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2018-09-11 23:44:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 23:44:11,861 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2018-09-11 23:44:11,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 23:44:11,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-09-11 23:44:11,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 23:44:11,873 INFO L225 Difference]: With dead ends: 154 [2018-09-11 23:44:11,874 INFO L226 Difference]: Without dead ends: 32 [2018-09-11 23:44:11,879 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 23:44:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-11 23:44:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-09-11 23:44:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-11 23:44:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-09-11 23:44:11,922 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2018-09-11 23:44:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 23:44:11,922 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-09-11 23:44:11,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-11 23:44:11,922 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-09-11 23:44:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 23:44:11,923 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:44:11,923 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 23:44:11,924 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:44:11,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1436118667, now seen corresponding path program 1 times [2018-09-11 23:44:11,924 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:44:11,925 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 23:44:11,925 INFO L202 CegarAbsIntRunner]: [0], [1], [11], [14], [16], [175], [179], [184], [188], [191], [218], [219], [220], [222] [2018-09-11 23:44:11,941 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-11 23:44:11,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 23:44:11,965 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 23:44:11,965 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-11 23:44:12,000 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 23:44:12,051 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-09-11 23:44:12,051 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 23:44:12,114 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 23:44:12,114 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 23:44:12,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-11 23:44:12,115 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 23:44:12,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-11 23:44:12,116 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-11 23:44:12,116 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 23:44:12,119 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2018-09-11 23:44:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 23:44:12,202 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2018-09-11 23:44:12,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-11 23:44:12,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-11 23:44:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 23:44:12,205 INFO L225 Difference]: With dead ends: 53 [2018-09-11 23:44:12,205 INFO L226 Difference]: Without dead ends: 37 [2018-09-11 23:44:12,207 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 23:44:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-11 23:44:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2018-09-11 23:44:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-11 23:44:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-09-11 23:44:12,214 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 14 [2018-09-11 23:44:12,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 23:44:12,215 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-09-11 23:44:12,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-11 23:44:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-09-11 23:44:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-11 23:44:12,216 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:44:12,216 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 23:44:12,216 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:44:12,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2024299098, now seen corresponding path program 1 times [2018-09-11 23:44:12,216 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:44:12,217 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-11 23:44:12,217 INFO L202 CegarAbsIntRunner]: [0], [1], [11], [14], [16], [175], [179], [184], [188], [191], [193], [196], [200], [202], [218], [219], [220], [222] [2018-09-11 23:44:12,229 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-11 23:44:12,229 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 23:44:12,255 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 23:44:12,255 INFO L272 AbstractInterpreter]: Visited 14 different actions 18 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 14 variables. [2018-09-11 23:44:12,291 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 23:44:12,327 INFO L232 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 48.89% of their original sizes. [2018-09-11 23:44:12,328 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 23:44:12,462 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 23:44:12,463 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 23:44:12,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-11 23:44:12,463 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 23:44:12,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-11 23:44:12,464 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-11 23:44:12,464 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-11 23:44:12,464 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-09-11 23:44:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 23:44:12,709 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-09-11 23:44:12,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-11 23:44:12,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-09-11 23:44:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 23:44:12,713 INFO L225 Difference]: With dead ends: 58 [2018-09-11 23:44:12,713 INFO L226 Difference]: Without dead ends: 42 [2018-09-11 23:44:12,714 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-11 23:44:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-11 23:44:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-09-11 23:44:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-11 23:44:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-11 23:44:12,721 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-09-11 23:44:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 23:44:12,722 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-11 23:44:12,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-11 23:44:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-11 23:44:12,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-11 23:44:12,723 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:44:12,723 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 23:44:12,723 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_lu_cmp_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:44:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1695001107, now seen corresponding path program 1 times [2018-09-11 23:44:12,724 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:44:12,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-11 23:44:12,724 INFO L202 CegarAbsIntRunner]: [0], [1], [11], [14], [16], [175], [179], [184], [188], [191], [193], [196], [198], [200], [202], [218], [219], [220], [222] [2018-09-11 23:44:12,736 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-11 23:44:12,737 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown